Malicious PDF — malware analysis report

Static analysis result for SHA-256 026677f2e9182a60…

MALICIOUS

PDF

72.3 KB Created: 2021-09-16 05:08:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: cd3ad39065180e9d52e9c41547eda991 SHA-1: bd00b25cd5c8453d95149657008fd74aaab710a1 SHA-256: 026677f2e9182a60c85ec91708bd092dd027ff62de2fcfbc997f574da56a8a26
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable or unknown domains, and is described as a link farm. The presence of external URIs and the link farm characteristic strongly suggest an attempt to redirect users to malicious sites, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://jin-ji.com/upload/files/tilurineso.pdf In PDF document text
    • https://sensesgrouphk.com/louis/STARKGROUP/ckfinder/userfiles/files/ravepolijuwugulureza.pdfIn PDF document text
    • http://taiwan-tsai.com/upload/files/kabezav.pdfIn PDF document text
    • http://canxetaianhduc.com/images/file/40469344659.pdfIn PDF document text
    • http://iseveranscopy.com/upload/editor/file/bijifilujewanapipa.pdfIn PDF document text
    • http://ruresept.ru/files/file/rurovopesekuzewigaganoji.pdfIn PDF document text
    • http://pwr-tech.ru/userfiles/file/vewalewagewomed.pdfIn PDF document text
    • http://euro-ex.net/images/blog/file/pulumupirejudetuse.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141c8a69517a---19914547231.pdfIn PDF document text
    • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/c4732b34a3d61156c2abc36cf0228dad/vopeduvuzizepuz.pdfIn PDF document text
    • http://newworldss.com/uploads/file/73189609513.pdfIn PDF document text
    • https://ewt.cz/res/file/81304333243.pdfIn PDF document text
    • http://automotiveenergy.cz/userfiles/file/74732194166.pdfIn PDF document text
    • https://ppkh.net/userfiles/file/37638095433.pdfIn PDF document text
    • https://pcparts.fr/ckfinder/userfiles/files/sepewutuxexajuxifagen.pdfIn PDF document text
    • https://ags-car.60km.com/upload/files/pifekukakutozinatawemod.pdfIn PDF document text
    • http://serting.eu/userfiles/files/99536055479.pdfIn PDF document text
    • http://ihdbd.org/upload/files/95013511663.pdfIn PDF document text
    • https://eagle-aviation.com/userfiles/files/vuxek.pdfIn PDF document text
    • https://rubenferro.com/userfiles/file/22430164807.pdfIn PDF document text
    • http://foxgraphics.paulsfashion.in/files/61213383157.pdfIn PDF document text
    • http://mikailang.net/userfiles/file/20210902013434_1967415914.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=renegade+raider+free+skinPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB985 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d197.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD197 16352 bytes
SHA-256: c526293bfd88560fef5375edbbf5eb7fbfc7439820b55b39f0c9bfa372a766c5
font_02_sfnt_off0000fc54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC54 10400 bytes
SHA-256: fc0d9d4d66b1578b5d926cc0c643d118d8152dc89ab5e336f095e833a844a0e1

Open this report in the interactive analyzer, or submit your own file for analysis.